(verb) to stop what you are doing, cease (This is a military term derived from the command “at-ease” which, even though sounds like it should mean “to relax”, actually is more restrictive than when a soldier is at “rest”, where a soldier is
free to move, talk, smoke, etc. It is from this
point that it is used to bring a soldier under control, particularly if the soldier in
question is involved in grab-ass.)
Soldier: HEY CHICKY BABY! DO I GET SOME FRIES WITH THAT
SHAKE?
Sergeant: AT-EASE THAT SH** OR I’
LL HAVE YOU STANDING BEFORE THE SERGEANT
MAJOR!